A solution contains 1 g mol. Each of p-toluene diazonium chloride and p-nitrophyenl diazonium chloride. To this 1g mol. Of alkaline of phenol is added. Predict the major product. Explain you answer.

A solution contains 1 g mol. Each of p-toluene diazonium chloride and

1.	A solution contains 1 g mol. Each of p-toluene diazonium chloride and p-nitrophyenl diazonium chloride. To this 1g mol. Of alkaline of phenol is added. Predict the major product. Explain you answer.
Answer» Solution :This reaction is an example of electrophilic AROMATIC substitution. In alkaline MEDIUM, phenol generates phenoxide ION which is more electron rich than phenol and hence more reactive for electrophilic ATTACK. The electrophile ini this reaction is aryladizonium cation. Stronger the electrophile faster is the reaction. p Nitrophenyldiazonium cation is a stronger electrophile than p-toluene diazonium cation. Therefore, it couples preferntially with phenol.